#618FC9
Closest named color: Faded Blue (#658CBB). oklch(64.1% 0.101 254.8), rgb(97, 143, 201).
Aa
Black text reads best on this color (6.28:1).
About this color
#618FC9 is a medium-light, moderately saturated blue. In OKLCH its lightness is 64%, its chroma 0.101 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.021 away. Black text reads best on it, at 6.28:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | moderately saturated (0.101) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 6.28:1 |
| White text | 3.34:1 |
Values
| HEX | #618FC9 |
| RGB | rgb(97, 143, 201) |
| HSL | hsl(213, 49%, 58%) |
| OKLCH | oklch(64.1% 0.101 254.8) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #618FC9 | 3.34:1 | AA large text | Lc -66.2 | Content text, not long reading |
| Black text on #618FC9 | 6.28:1 | AA | Lc 43.3 | Non-text elements, placeholder text |
| #618FC9 text on white | 3.34:1 | AA large text | Lc 60.7 | Content text, not long reading |
| #618FC9 text on black | 6.28:1 | AA | Lc -41.0 | Non-text elements, placeholder text |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 500.
-
Step 50
50
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E4EBF4
oklch(93.7% 0.014 254.6)
-
Step 200
200
#CDDAEB
oklch(88.4% 0.027 255.1)
-
Step 300
300
#ACC3E1
oklch(81% 0.049 255.1)
-
Step 400
400
#7FA3D2
oklch(70.7% 0.08 255.3)
-
Step 500
500 (this color)
#618FC9
oklch(64.1% 0.101 254.8)
-
Step 600
600
#4475B2
oklch(55.6% 0.109 254.8)
-
Step 700
700
#356299
oklch(49.1% 0.102 254.5)
-
Step 800
800
#2D507C
oklch(42.7% 0.084 255)
-
Step 900
900
#284364
oklch(37.8% 0.066 254.2)
-
Step 950
950
#18273B
oklch(27% 0.043 255.9)
#618FC9 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #7892CC | 0.030 |
| Deuteranopia (no green cones) | #6B88C8 | 0.021 |
| Tritanopia (no blue cones) | #2B9CA3 | 0.090 |
| Achromatopsia (no color) | #8C8C8C | 0.101 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #618FC9
#618FC9
oklch(64.1% 0.101 254.8)
- #B18340
#B18340
oklch(64.2% 0.101 74.5)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #618FC9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.021
- Dusty Blue #5A86AD ΔE 0.046
- Cool Blue #4984B8 ΔE 0.047
- Dark Sky Blue #448EE4 ΔE 0.048
- Off Blue #5684AE ΔE 0.049
- Silver Lake Blue #778DA9 ΔE 0.052
- Cornflower Blue #6495ED ΔE 0.054
- Steel Blue #4682B4 ΔE 0.056
Use #618FC9 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.